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Updated: Jul 7, 2026

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
Published on: January 23, 2017
Attending to orientation results in an inhibitory surround in orientation space
Michael Tombu1, John K Tsotsos
1Department of Psychology, Vanderbilt University, Wilson Hall, Nashville, TN 37203, USA. mike.tombu@vanderbilt.edu
Abstract:
Subjects were required to attend to an orientation and make judgments about the stripes on briefly presented disks. Stripe orientation was varied so that they could be at, near, or far from the attended orientation. According to the selective-tuning model (Tsotsos, 1990; Tsotsos et al., 1995), attending to an orientation results in an inhibitory surround for nearby orientations, but not for orientations farther away. In line with this prediction, the results revealed an inhibitory surround. As in the spatial domain, attending to a point in orientation space results in an inhibitory surround for nearby orientations.
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